diff --git a/src/Eventuate/Eventuate.csproj b/src/Eventuate/Eventuate.csproj
index d933ab5..3899214 100644
--- a/src/Eventuate/Eventuate.csproj
+++ b/src/Eventuate/Eventuate.csproj
@@ -8,7 +8,7 @@
   <ItemGroup>
     <PackageReference Include="Akka" Version="1.3.14" />
     <PackageReference Include="Akka.Streams" Version="1.3.14" />
-    <PackageReference Include="Google.Protobuf" Version="3.8.0" />
+    <PackageReference Include="Google.Protobuf" Version="3.15.0" />
     <PackageReference Include="System.IO.Pipelines" Version="4.5.3" />
     <PackageReference Include="System.Memory" Version="4.5.3" />
     <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.5.2" />